Centrifugal filtering or dewatering machine for ore-pulp.



, J. 0. KING. GENTRIFUGAL PILTERING 0R DBWATERING MACHINE POR ORE PULP. APPLICATION FILED JULY 19, 1913.

1,088,823. Patented Mar.3,1914.

4 SHEETS-SHEET 1.

` J. c. KING. OENTBIFUGAL FILTBRING 0R DBWATERING MACHINE FOR ORE PULP. APPLICATION P'IIED JULY 19, 1913.

11,088,828, Patented Mar. 3, 1914.

' 1 summa-sanno: z.

J. C. KING. ,OBNTBIFUGALHLTERING on DBWATERING MACHINE P0P. ORB PULP.

l APPLICATION FILED JULY 19, 1913A 1,088,823.

Patented Mar. 3, 1914.

4 SHEETS-SHEET 3.

l anar/nu,

J. C. KING.

GBNTMFUGAL HLTBRING 0R DBWATBBING MACHINE FOR ORB PULP.

APPLICATION FILED JULY 19, 1913.

1,088,823. Patented Mar. 3,1914.

ICKINC- UNITED sTAThns PATENT OFFICE.

l JESSE C. KING, F LA JUNTA, COLORADO, ASSIGNOR 0F ONE-HALF TO AARON WILKINS, 0F LA JUNTA, COLORADO.

CENTRIFUGAL FILTERING OR DEWATERING MACHINE FOR ORE-PULP.

Patented Mar. 3,1914. semina. 750,045.

Be it known that I, JESSE C. KING, acitizen of the United States, residing at La Junta, in the county of Otero and State of Colorado, have invented certain newv and .useful Improvements in Centrifugal Filtering or Dewatering Machines for'Ore-Pulp, of which. the following is a specification, reference being had to the' accompanying drawings.

This invention relates to ore filters or slimers and more particularly to a. centrifu al filtering or dewatering machine for` ore so utions for separating the slime pulp thereof from the metal bearing solution, the primary object of the invention residing in the provision of improved means for discharging the slime pulp from the machine.

The invention has for another object to provide a plurality of filters arranged at the outer edge of a rotary platform or bed plate upon which the ore impregnated solution isreceived, and means for elevating the filters at intervals during the rotation of the solution supporting platform and turning said filtersv whereby the` slime which has collected thereon is discharged by centrifugal action.

A further object of the invention resides in the provision of improved means for mounting a series of filters for pivotal and vertical movement, a plate carried by each of *the filters to replace the same at the outer edge of the rotating platform, when the tilters are elevated, means for elevating the filters, and additional means to turn the lilters as they are`moved upwardly, whereby the slime which has collected .upon the sere ning surface of the filters is thrown outwar ly therefrom into a suitable receiving tank. 5

The invention has for still another object the provision of an improved filter construction having opposed filtering screens adapted to be ,alternately disposed for engagement by the ore carrying solution.

Another object of the invention is to produce a machine for the above purpose which is comparatively simple in its construction, highly efficient and durable in practical operation, and will effect a thorough separation of the slime pulp from the remainder of the4 solution.

,.With the above and other objects in View, the ,invention consists in certain construc- Applieat'ibn 'tiled July 19, 1913.

tions, combinations, and arrangements of parts that I shall hereinafter more fully describe and claim.

For a full understanding of the invention, reference is to be had to the following description' and accompanying drawings, in which- Figure lis a vertical section of a machine embodying the present invention. Fig. 2 1s a horizontal section taken on the line 2--2 of Fig. 1. Fig. 3 is a fragmentary vertical section, showing one of the filters disposed in its discharging position. Fig. 4 is an enlarged fragmentary view illustrating the mounting of the filters. Fig. 5 is an enlarged section taken on the line 5-5 of Fig. 4. Fig. 6 is an yelevation of one of the filters` removed. Fig. t is a section taken on the line 7-7 of Fig. 4. Fig. 8 is a detail ele? 'vation of the filter turning pinion.

Referring in detail to the drawings, 5 designates the corner posts or uprights of a hexagonal frame structure, said uprightsbeingl preferably formed of angle iron. A series of horizontal metal beams (5 connect these angular uprights, and additional lower I-beams 7 are arranged in Jarallel relation and fixed at their ends to the lowermost connecting beams 6 by means of suitable bracket plates 8. The I-beams 7 are disposed upon opposite sides of the vertical center of the frame structure, and are conp nected at intervals by the transverse brace bars 9. l

A bea'rinfr block lOis provided in its upper surface with annular raceways 11 to receive the bearing balls 12. The block 10 is provided with a central o ening to receive the reduced lower end 14 of a vertical shaft 13. A cap plate 15 is fixed upon the lower end of said shaft, and rests upon the annular series of hearing balls 12. A head block 16 is keyed or `otherwise secured to lthe upper end of e the shaft 13 and is provided with an interiorly threaded socket to reeeivethe inlet pipe 17. This pipe in its lower end is provided with annular series of elongated slots 18, and has its upper end disposed in a supporting collar 19, suitably fixed between and to a pair of horizontal parallel T-bars 20, which constitute a part of the supporting frame.

A plurality of radially disposed T bars 2L are suitabl secured at their inner ends to the head blo ck 16. These bars are slightly [Nl inclined upwardly from their inner to their blocks.

.r tion thereto.

436 .providerfl in the upriirhts outer ends, and upon the same the'bed plate or platform 22 is secured. This bedplate serves as a receiving table for the ore carrying solution. A vseries of' metal castings, generally indicated by the numeral 23, are bolted together at their abutting vertical edges, said castings being mounted upon and depending below the outer ends ofthe T bars 21. Each of these castings includes an upwardly extending channeled' bar 24.`

It willbe understood from reference to Fig. 4 of the drawings, that the channels of the bars 24 are. continued in the body of the castings 28,-so that said channels in adjacent castings provide guide-ways for the filters Any desired number of these fil-- ters may be employed in accordance with the capacity of the machine. castings is provided with compar tively wide and narrow vertical channels Q6 and 27, respectively.

28 designates a slide bar which is vertically -movable inthe wider channel 26 and a block 29.is arranged within the inner face of this channel. A pair of these blocks arranged in the channels 26 of the opposed guide castings constitute the ends or' heads of the filters In the smaller channels?? theelevating bars 30 are disposed, the upper ends of said bars/being engaged upon the trunnions 31 which are fixed in the head blocks 29.

Each of the tion andincludes the filtering cloths 32. Each filtering clot-h is arranged between a pair of curved wire mesh screens .33, the edges of the cloth in the screen being secured together by suitable ,binding strips. The curvature of leach of the two filtering cloths 32 and the pairs of wire screens is such`as t0` dispose the same, when arranged contiguous to the j'ieripheny'ot' the outer or bed plate 22, in concentric rela- Ihe two filtering screens are lspaced :from each other, as clearly shown in Fig. 5,and held in such spaced rclatiol'i by means of the head blocks 2f) and an in- -ternicdiatc block .'j'hsuitalile bolts or rivets 35 .securing thel spaced screens to said As before stated, each of tlihead lblocks 29 of' the filter provided with a trunnion 31. These trunnions which are arranged in the upper ends of the elevating bars 30 are lmounted for vertical n'iovementjin the' slots Q4 'formed on thc castings 23. (inc truunion of? cach filter has a suitable head fixei'l thereto 1o reutain the .saine in the slot of one ofthe casting uprights Q4. 'while upon the other trunnion of the filter disposed in the slot of the opposed'uprighl. a pinion its is mounted. This pinionis loose upon the filtei trunnionand carries a pawl 3S) for engagel filters is of duplexconstrucY Each` fthe fully pointed ing curved guard plate.

feurely ment with the teeth of a ratchet 40 which is fixed ,upon the trunnion 31. To the up# right 24- or casting which is disposed contiguous to the pinion 38, a rack 4l is scoured'. 'The pinion -is adapted for engageL ment with the teeth of this rack in the 'upward movement ofthe filter so as to turn said filter, for a purpose which will be more out in the description ot the operation of my machine, which willprescntly follow. The upper ends of the uprights vor. vertical extensions .24 of the castings 23 are connected by the bars 42 so as to brace and strengthen the saine, and radially disposed truss rods connect said bars to a -collar 44 which is fixed upon the inlet pipe 17 immediately beneath the bearing block 19.

45 indicates a transversely 'curved annular plate which is suitably secured to the inner face of the guide vuprights 24 and is disposed above 'and' in spaced relation to the table or bed plate 22. This transversely curved plate acts as a guard and prevents the solution being thrown outwardly over the upper edges of the filters by centrifugal force during the rotation, ofthe table. As shown in Fig. `1, the filters are of sufficient height to extend between the table and this inwardly extend- The several filters adjusted so as to facilitate may be angularly the collection and discharge of the slimel pulp therefrom by mea-nsof the screws 46 lwhich are threaded in the movable bars 28 and are adapted for binding engagement with the head blocks 29 of the filter. p

To the lower ends of the elevating bars 30, an angle bar 47 is secured, said angle bar being "of substantially U-shape form, as clearly shown iny Fig. 4. To the parallel portions of this angle ba'r, a'plate 48 'is seriveted, the upper edge of said plate engaging the lower end of the filterl 25. This plate is adapted to tathe place of the filter when said filter 'is rotated or elevated to discharge the slime pulp in the manner to be later' explained. The several bars 47 are connected by means of radially disposed T bars 49 to a sleeve 50 which is keyed, as at '5l upon the vertical shaft 13. Obliqucly disposed brace rods 52 connect the lower end of said sleeve to the radial bars 4f). The sleeve i 5f) at its lower end is mounted to rotate in a ing prm'idedwith a central cylindrical'en-l connect relatively opposite directions.

v eled gear is fixed and meshes with a simi- -justably mounted upon the rod 77 by means largement having-a vertical threaded bore to receive an adjust-ing screw 57. As each of the means for operating the adjusting screws is identical, it is understood that the following description of one such operating means applieswith equal force to both.

' Upon the lower unthreaded portion of each screw 57, a pair of connected miter gears 58 are keyed for sliding movement, the beveled teeth of said gears being disposed in One of these gears has a collar 59`formcd therewith to receive a yoke 60 on one end of an operating lever 61.

62 indicates the power transmission shaft i mounted in suitable bearings 63 bolted or otherwise secured-upon the connecting bars 7 between the beams 6. ()ne end of this shaft is provided with a beveled pinion 64 disposed vbetween the opposed gears 58 and to tlie'other end of said shaft a beveled gear 65 is lixed and meshes with a similar gear 66 which is loosely mounted upon the shaft 13. This latter gear is arranged between a collar 67 fixed upon the shaft and a sliding clutch member 68 keyed on said shaft. rllns clutch member is adapted to be actuated by lneans of a-lever 69 and is yieldingly held in engagement with the clutch face of the gears 66 by means of a heavy coil spring 7() arranged upon the shaft. 18 and bearing at one end against the clutch member and at its other end against the collar 71 fixed to said shaft.

73 designates the power shaft mounted in suitable bearings in the frame of the machine and having a drive pulley 74 secured to one of its ends whereby the same may be driven by means of a belt extending to an engine or' other suitable source of power. To the opposite end of this shaft 73, a bevlar gear 76 fixed upon the lower end of the vertical shaft 13.

A gear shifting rod 77 is mounted for vertical movement 1n,a suitable guide 78 fixed upon the upper 'end of the lifting screw 57. A sleeve 79 secured to the plate 56 is loosely engaged upon Ythis'rod and is adapted to contact with stop collars 80 which are adof suitable set screws. The lower end of the. y rod 77 is connected to 'the yoke of the elevating lever 61. The levers 61 for actuating the movable bars or gears' 58 are fulcrumed, as indicated at 81 upon one of the lower horizontal I beams 7, and are convergently disposed and connected to a common actuating lever 82, whereby the pairs of gears may be simultaneously shifted.

85 and 86 respectively. The lower compartment 86 of the tank is provided with two outlets for the purpose which will be later referred to, while the up )er compartment 85 has a single outlet. This latter compartment receives the slime pulp, while the solution in which the ore is carried and the Water are received in the lower compartment.

87 indicates a pipey extending from the tank or reservoir containing the solution and having its discharge end disposed over the upper open end of the inlet pipe 17. A suitable supply controlling valve 88 is arranged in, this pipe.. A water supply pipe 89 is connected to the pipe 87 and in the same a control valve 90 is arranged.

Having now described the particular construction of my machine, the operation of the same will be understood as follows: lhe primary purpose of the machine is to filter the slime pulp from' a cyanid solution, although it will be understood that. the machine is also well adapted to the de-watcr ing or sliming of ore solutions containing precious metals. The ore impregnated solution is fed through the medium of the inlet pipe 17 to the table or bed plate 22. 'lhe machine is set in operation by releasing, the clutch member(S0-whereby the gear 66 is locked' upon the shaft 13 and motion is then transmitted to said shaft from the power shaft 73. As the shaft is rotated, the parts fixed thereon, namely, the supporting table and thefilter supporting beams 4S) will also be rotated. The centrifugal force thus generated, throws the solution outwardly through the slots 18 in the lower end of the inlet pipe and 'against the innermost screens of the filter. The slimebanks up against these filter screens, the solution passing through the screens and into the lowerniost compartment 86 of the tank 83, from which the same is thrown oli' through one ofthe outlets of said compartment and conveyed back to the solution tank by meansof a suitable pipe or conduit. When the operator is of the opinion that. a suflicient amount 'of slime pulp has collected. on the filtering screens, the feed of the solution. t'o the rotating table is cut ofi' and the pairs of the mitcr gears 58 are shifted inithe proper di` rection to engage one of said gea-rs with the power transmission pinions-(t of the shaft 62. The vertical adjusting screws 57 are thus rotated, and as said screws are threaded in the plates connecting the channel hars 54, said bars, together with the beams 40 of the filters, and replacer. plates 48 mounted lthereon will be elevated, the iltcr trunnions moving upwardlyI in the slots 36 of the guide np- A tank 83 is disposed within the frame up- -rights 24. In this u nvard movement of thc rights 5 and is suitably secured thereto. This tank is provided wlth spaced annular inclined walls 84, whereby the same is di vided into upper and lower compartments filters, the pinions. Hthereof are brought into engagement with the teeth of the racks 41, and as'said pini'ons are locked to the ratchets of the filter trnnnjons,'the "several filters are turned and horizontally disposed above the inwardly curved l@guard plate 45, as indicated in dotted lines in Fig. 4. lt is, ot course understood that as the sleeve Il() is keyed upon the shaft i3, the filters are. constantly rotated through their upward movement. Thus, when said filters are reversedor turned over, as will be later clearly understood, the centrifugal force acts vto throw the slime pulp outwardly from the screeningr su rfacesandinto the upperchamber or compartment of the collecting tank. several filters move upwardly, their place is taken by the plates 48 the solution from the rotating table or liedl plate 22 is prevented. After the slime pulp has thus been discharged into the upper comparl ment of the tank, the operator reverses -the movement of the connecting` gears 58 and engagesI the other of said gears with the pinion (311, thus reversing,` the rotation of the screws 5T and lowering the filters. lt is to be noted that the sleeve XT() engaging the upper stop collar 80 on the rod 77, moves said rod to shift the gears 58 automatically, discontinuing; the upward movement' ot' the filters. ln the reverse or downward movement of theilters, the-pinions rotate loosely upon the filter trunnions in their movement lupon the racks 4l, land as the filters are lowered, the positions of the screening surfaces are reversed `from .that 'which they formerly occupied so that'after each discharge of material, the screen which was previously disposed outwardly is arranged inwardly in opposed relation to the solution. lt any slime pulp ren'iains upon the screening s1ix'tace,after the screens have been lowered to their normal positions, water may be supplied to the inlet pipe 17 by `turning the valve 9() in the water supply pipe S9. This water passing through the sci-eens of the filters, 4removeslsuch slime pulp as may adhere toI the outer screen and :arries the same into vthe lewin-most compartment S6 of the tank. l'irlm which the same may be drawn off' throurli the ol her ol. the outlets.and said ore particles collected in any desired n'lanner. y

From the'foregoingr, it will'be seen that l have provided a filtering er ile-Vatering machine VFor the collect-ion 'of slime pulp, which \vill.be l'iighly efficient and reliable in its operation and will separatelihe lslime pulp from. the ore solution'. aliten'ivhieh the precious metals may be readilyv removed from the cyanid solution hy' an t suitable process, as.\\1ill be readily uudersllood. ther be appreciated that as the machine is comparatively simple in ils conslruclion. the. same can-be produced l'acturing' cost.

While l have shown and described the preferred construction and arraneemems` olihe several ele1nents,\}'hieli is susceptible ot' con- As the,

so that the escape of 4 a common axis, means.

.of filtering screens at small manusiderable modification therein, l reserve the right to resort to all such legitimate changes as may be fairly embodied within the spirit and, scope ot' the appended claims.

- llaving thus described my invention, what l claim, is:, v

l. le a centrifugal machine, a plurality ofsereensmounted for rotation about a common axis, means for moving the screens bodily in a plane parallel with said axis, and additional means .for disposing the several screens in planes at rightl angles 'to their axes of? rotation.

la a centrifugal machine, a rotary table, a plurality of filtering screens mounted upon lhe outer edge. ot said talole and normally stationary with respect thereto, said screens being disposed in parallel relation to the axis of the table, means for ele-- vating the screens above the upon theI table, and additional automatically turning the screens as they are elevated anddisposing the same in planes at right angles to the rotary .axis of the table.

3. AIn 'a centrifugal machine, a plurality of filtering screens mounted to rotate about for rotating said screens, means rotatable with the screens t0 feed the ore impregnated solution to said screens, means for moving lthe screens in a plane parallel totheir axis of rotation, and additional means `for singularly disposing the screens with relation to their axis of ro-V tation whereby the slime collected thereon is discharged by centrifugal force.

hed of material' I means forv 4. In a centrifugal machine, a, plurality of filtering` screens mounted to rotate about a' common axis, means for rotatingsa-id screens, means-rotatable with the screens to .feed the ore Vimpre,f 'nated'solution to'said screens, means for moving the screens in a plane parallel to their axis of rotatipn., and means 'for bodily turning the said r:screclls about individual axes, whereliy the sli/ine eolr ler-ted thereon is discharged by centrifugal f'orce. u "l 5. In a centrifugal machine, a plurality mounted to, rotate about a, common axis. means for rotating Said screens, means 'for feeding theore impregn a ted solution to the screens, means for moving;- said screens in parallel relation to their axis ol rotation, and individual vmeans for' moving; each screen during` said latter m'over menll to 'au angular position with relation to its rotative axis whereby the slime collected thereon is discharged by centrifugal force.

o. ln a centrifiural machine, a rotary table. a, pluralily ol vertically movable filterinfr .screens arrz'mgjed at the outer edge off .said fable, and rotatable with the same, means l'or feeding the` ore unpregnated so-- lulen lo the screens, a replacer plate movable. with each screen, and means for` elerating the screens and plates to dispose the screens above the solution for the removal of the slime pulp therefrom and positioning the replacer plates at the outer edge of the table to retain the solution thereon.

7. In a centrifugal machine, a rotary table, a plurality of vertically movable filtering screens arranged at thc outer edge of the table to rotate therewith, said screens `being mounted to rotate about individual axes, a replacer plate movable with each of the screens, means for feeding the ore im pregnated solution to the screens, and mean-s for elevating the screens above the solution and'rotating the Same in theiriipward movement to angularly dispose the screens with relation to their axis of rotation, whereby thel slime pulp is discharged therefrom by centrifugal force, said replacer plates. occupying the normal positions of the screens at the outer edge of, the table to retain the solution thereon. A

8. In a centrifugal machine, a rotary table, a plurality of vertically movable iltering screens arranged at the outer edge of said table-to rotate therewith, said screens being also mounted to rot-ate about individual axes, means for feeding the ore imi pregnated solution to' the screens, a pinion mounted .upon the axis of each screen, racks tobe engaged' by said pin-ions, and means for elevating the-screens upon the table and engaging the pinions with said racks` to turn said screens and angularly dispose the same with relation to their axis of rotation, whereby vthe slime collected thereon is discharged therefrom by centrifugal' force.

. 9. In' a centrifugal machine, a rotary table, a plurality of filtering screens mounted at the outer edge of said table to rotate therewith, each of said screens having spaced screeningr surfaces, said screens being alsol mounted toV rotate about individual axes, means for effecting said individual rotation of the screens to angularly dispose the saine with relation to their common axis of rotation, whereby the slime is discharged from the screens by centrifugal force, said rotation of the screens alternately presenting the screening surfaces to the solution when the screens return to their normal position.

l0. In a centrifugal machine, a rotary table, a plurality of filtering screens mounted al. the outer edge of said table for vertical movement and also for/rotation about in diridual axes, a replacer plate vertically movable with each of the screens, means for moving said screens and plates to elevate the screens above the ore solution and to dispose said plates in the positions normally occupied by' the screens whereby the solution is retained in the table, and means for individually rotatingl said screens during their upward movement to position the same at an angle with relation to their common axis of rotation, whereby rthe slime collected upon the screens is.iliscliaiged therefrom by cen,- trifugal force.

11. In a centrifugal machine, a rotary table, a plurality of filtering screens inoun'ted upon the outer edge of said table for bodily vertical movement, and means foi 'elevating the several screens above the bed of material upon the t'able.

12. In a centrifugal machine, a rotary table, a plurality of filtering screens mount- 'ed upon the outer edge of said table for bodily vertical movement, each of .said screens having a rotative axis, means for elevating the screens above the bed of material upon the table, and additional means for rotating the several screens upon theiry axes to dispose the same at an angle from their normal positions with relation to the rotary axis of the table.

13. In a centrifugal machine, a rotary table, spaced vertical guides arr: nged at the outercdge of said table, a filtering screen mounted in each of said guides for vertical movement, means for simultaneously, elevating the several screens above the bed of Inate'rial on the table, and additional means movable in said guides to occupy the normal positions of the screens when the latter are elevated and retain the material.upon the table.

In testimony whereof I hereunto atlix my signature in the presence oftwo witnesses.

JESSE C. KING. lfVitnesses:

HENRY lV. ALLEN,

lMARION F. MILLER. 

